{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "148753",
    "entityType": "User",
    "nonce": "0xb5fb4a0d2f686a51e3e058b3696beff11044d14184a9e6e29cc0ce613b624aaf",
    "signature": "0x2ff51fbd61e8ca3deb9d0b996c543ecfd568e2149e598cf90b4ef9f949d6129f5cfa4a9634188b2f7c34a9d9b8d86d503c8360e8a449c1033e7c276540e5f4961b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}