{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "337712",
    "entityType": "User",
    "nonce": "0x1d3dbcd3a272d163aca2b88857a142bc62cb274efe1b2d64b807dff1756444c8",
    "signature": "0xeb21ad8386f00d2dec939e7f15475d8aad34902df18a013d6d8ff5298ea28a9f1bcacf9fe1357e4d6ba4b108f9080073e9a3221eee71b4c9e763d7460d5308661b",
    "signer": "0x94e0dDC50579175818AaCFBC9aba8B065fEf2a55",
    "userId": "460147282"
  }
}