{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x2d501eb61e4c4d138ecd26efa7c75dc3ff7f5ca3c7512205ed507ce6b43393b9",
    "signature": "0x4212401e2c8c55f055864e17ab995bdb4432543781c99d711d465158081ce07447dad0f77c42c340f7fb1a9c730c4cca14e00b140b71fbf5d656761fc330d5451b",
    "signer": "0x963B2D9039b92BFB33Ac9829721DE644c9c6BfD2",
    "userId": "744247173"
  }
}